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Date:      Sun, 07 Feb 2010 13:01:56 -0800
From:      Sam Leffler <sam@errno.com>
To:        Alexander Egorenkov <egorenar@googlemail.com>
Cc:        freebsd-net@freebsd.org, Rui Paulo <rpaulo@freebsd.org>
Subject:   Re: HT rate set in net80211 not changeable for STA
Message-ID:  <4B6F2A44.3010205@errno.com>
In-Reply-To: <2d3b7e441002070041waa8f968le66328ebeb7b163d@mail.gmail.com>
References:  <2d3b7e441002060028i5b1fc665p92b10fa21d77284d@mail.gmail.com>	 <8F5F80D8-A262-49F4-B580-781A44D3190D@freebsd.org>	 <2d3b7e441002060658h49712201m464dac80208db369@mail.gmail.com>	 <4B6DE491.8010901@errno.com> <2d3b7e441002070041waa8f968le66328ebeb7b163d@mail.gmail.com>

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Alexander Egorenkov wrote:
> 
> 
> On Sat, Feb 6, 2010 at 10:52 PM, Sam Leffler <sam@errno.com 
> <mailto:sam@errno.com>> wrote:
> 
>     The advertised rate set should be initially set according to the
>     capabilities of the device.  There were no devices > 2x2 when I
>     wrote the code so MCS15 is the max.  To support such devices you
>     need to do more than just grow the rateset.
> 
> 
> But my device is a 2T2R  device and supports MCS32 (HT duplicate mode).
> 

MCS32 is special; as you indicate it forces duplicate signal on the 
upper and lower channels in HT40.  There is no support for MCS32 in 
net80211.

	Sam



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